TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
Page 299 of 1205
TM 9-2320-387-24-l BATTERY CIRCUIT KNOWN INFO BATTERY VOLTAGE IS NOT CORRECT POSSIBLE PROBLEMS BATTERY OR BATTERIES CABLES ALTERNATOR KNOWN INFO BATTERIES OK POSSIBLE PROBLEMS CABLES KNOWN INFO BATTERY VOLTAGE NOT CORRECT POSSIBLE PROBLEMS BATTERIES ALTERNATOR DOES EACH BATTERY MEASURE 11-13 VOLTS? T OPTIONS 1. STUICE-R TEST 69 (Page 2-506) 2. MULTIMETER REASON FOR QUESTION A good battery has 12 volts at 70’F (22°C). A2 t r= CHECK THE VOLTAGE DROP ACROSS EACH CABLE IN THE BATTERY BOX (SEE NOTE AT RIGHT). ARE ALL VOLTAGE DROPS LESS THAN 0.25 VOLT MAX? OPTIONS 1 .STE/lCE-R TEST 69 (Page 2-506) 2. MULTIMETER REASON FOR QUESTION Everything else checks out OK. These cables are the only thing in the battery circuit we haven’t tested. A3 1 YOUR BAlTERlES ARE OVER- CHARGED OR DISCHARGED. RUN THE ALTERNATOR TESTS. IF NO FAULTS ARE FOUND, REPLACE THE DEFECTIVE BAlTERY OR BATTERIES. 2-242